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Benlysta

Belimumab

An intravenous or injectable biological therapy used to treat lupus and lupus nephritis.

BLyS-specific inhibitor
Generic name
Belimumab
Brand name
Benlysta
Route
Intravenous, Subcutaneous
Marketed by
GSK (Human Genome Sciences)
FDA pharmacologic class
B Lymphocyte Stimulator-specific Inhibitor; B Lymphocyte Stimulator-directed Antibody Interactions
First FDA approval
9 Mar 2011

Where Belimumab is approved

All regulators →

Of the three regulators tracked here, the first to approve Belimumab was the US, on 9 Mar 2011. It is approved in 3 of the 3 regulators tracked here.

USUnited States (FDA)
9 Mar 2011
Benlysta
BLA125370 on Drugs@FDA
First original NDA/BLA approval
EUEuropean Union (EMA)
13 Jul 2011
Benlysta
EMA product page
First centralised authorisation
CACanada (Health Canada)
6 Jul 2011
Benlysta
Notice of Compliance 12482
First new-drug NOC

From the regulators' own registers: FDA Drugs@FDA, the EMA medicines list and Health Canada's Notice of Compliance database. Dates are the first listed approval of a product containing only this substance; combination products and nationally authorised EU medicines are not counted.

What health systems spend on Belimumab

All medicines →
ENNHS England
Not dispensed in the community in England in the last 12 months under this name
Net ingredient cost, community prescriptions
USUS Medicaid
$260.3m
66,077 prescriptions in 2025 · Benlysta
+19% on 2024
Amount Medicaid reimbursed, before rebates

From NHSBSA Prescription Cost Analysis (Open Government Licence v3.0) and CMS State Drug Utilization Data. Both are gross amounts: neither system publishes its discounts or rebates per drug. Products combining several substances are not counted here.

How Belimumab works

All drug targets →
  • Tumor necrosis factor ligand superfamily member 13B inhibitor Inhibitor
    Target: TNFSF13B TNF superfamily member 13b
    ChEMBL only
Other medicines acting on TNFSF13B
Diseases it has been tested for in clinical trials, by furthest phase
  • Anti-neutrophil cytoplasmic antibody-associated vasculitisPhase 3
  • Autoimmune thrombocytopenic purpuraPhase 3
  • Granulomatosis with polyangiitisPhase 3
  • Interstitial lung diseasePhase 3
  • Microscopic polyangiitisPhase 3
  • Autoimmune polyendocrinopathyPhase 2/3
  • DermatomyositisPhase 2/3
  • Idiopathic inflammatory myopathyPhase 2/3
  • PolymyositisPhase 2/3
  • Systemic sclerosisPhase 2/3
26 diseases in all

Mechanisms and diseases from ChEMBL via the Open Targets Platform (release 26.09), ChEMBL record CHEMBL1789843, CC BY-SA 3.0. Targets checked against the IUPHAR/BPS Guide to PHARMACOLOGY (2026.3), ligand 6887, CC BY-SA 4.0. Trial phases are not approvals: approved uses are shown from the regulators' own records where we hold them.

NICE appraisals of Belimumab

All NICE appraisals →

NICE, which decides whether the NHS in England should fund new medicines, has published 3 technology appraisals of Belimumab. 3 are current, and 2 of these recommend it for at least some patients.

AppraisalNICE recommendationPublishedStatus
Belimumab for treating lupus nephritis (terminated appraisal)
NICE TA806
Terminated (no company submission)13 Jul 2022Current
Belimumab for treating active autoantibody-positive systemic lupus erythematosus
NICE TA752
Optimised15 Dec 2021Current
Belimumab for treating active autoantibody-positive systemic lupus erythematosus
NICE TA397
Optimised22 Jun 2016Current

NICE decisions apply to the NHS in England. In Ireland the HSE decides on reimbursement, advised by the National Centre for Pharmacoeconomics. Titles, categories and dates link to the guidance on nice.org.uk. © NICE 2026 technology appraisal guidance. Available from www.nice.org.uk/guidance. All rights reserved. Subject to Notice of rights. NICE guidance is prepared for the National Health Service in England. All NICE guidance is subject to regular review and may be updated or withdrawn. NICE accepts no responsibility for the use of its content in this product/publication.

Patient leaflets for Belimumab

The package leaflet is the official guide for patients that comes with every medicine. These links go to the regulators that publish it.

  • IE
    Ireland: 3 products on the HPRA list
    Each product record links to the HPRA, which publishes the leaflet and SmPC.
  • EU
    European Union: Benlysta
    EMA product information: package leaflet and summary of product characteristics in every EU language.
  • UK
    United Kingdom: Search MHRA Products
    Patient information leaflets and SmPCs for UK-licensed products.
  • US
    United States: Search DailyMed
    FDA-approved labels, including patient and medication guides.

Leaflets differ between brands and countries; always read the one that comes with your own medicine. This is regulatory information, not medical advice.

Reference identifiers for Belimumab

ATC code
L04AA26
ChEMBL
CHEMBL1789843
DrugBank
DB08879
CAS number
356547-88-1
FDA UNII
73B0K5S26A
Wikidata
Q1996249
Wikipedia
Belimumab

Codes that identify this medicine in other databases, from Wikidata (CC0), matched by its ChEMBL ID. The ATC code is the WHO classification of what the medicine is used for.

What Benlysta is used for

BENLYSTA is indicated for the treatment of patients 5 years of age and older with: • Active systemic lupus erythematosus (SLE) who are receiving standard therapy, and • Active lupus nephritis who are receiving standard therapy. Limitations of Use The efficacy of BENLYSTA has not been evaluated in patients with severe active central nervous system (CNS) lupus. Use of BENLYSTA is not recommended in this situation. BENLYSTA is a B-lymphocyte stimulator (BLyS)-specific inhibitor indicated for the treatment of patients 5 years of age and older with: • Active systemic lupus erythematosus (SLE) who are receiving standard therapy; ( 1 ) • Active lupus nephritis who are receiving standard therapy. ( 1 ) Limitations of Use: The efficacy of BENLYSTA has not been evaluated in patients with severe active central nervous system lupus. Use of BENLYSTA is not recommended in this situation. ( 1 )

How it works

12.1 Mechanism of Action BENLYSTA is a BLyS-specific inhibitor that blocks the binding of soluble BLyS, a B-cell survival factor, to its receptors on B cells. BENLYSTA does not bind B cells directly, but by binding BLyS, BENLYSTA inhibits the survival of B cells, including autoreactive B cells, and reduces the differentiation of B cells into immunoglobulin-producing plasma cells.

Related clinical trials recruiting now

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How this page is built

The facts on this page are pulled directly from official U.S. FDA datasets — they are not written from memory. Each field below names the dataset it came from, so you can check it yourself.

Plain-English summaries and drug-class explainers are written and reviewed by Sreepriya Prasannan (MSc Digital Transformation of Life Sciences (Innopharma Education / Griffith College); MSc & BSc Botany). Data is retrieved automatically from the sources above and cross-checked with AI-assisted verification (Anthropic's Claude) — brand and generic names are matched against the exact FDA product record so that a combination product or a different formulation cannot be mistaken for the drug on this page. An editor reviews the result before publication. We describe this in full in our editorial standards and corrections policy. The FDA data on this page was last retrieved on 7 Oct 2026. How every register is built: methodology · fixes we have made: corrections log.

Please verify before you rely on this. This page is general information for life-science and pharmaceutical professionals. It is not medical advice, and it has not been reviewed by a clinician — our editorial team holds life-science qualifications, not clinical ones. It is not exhaustive and may not reflect the most recent label change. Always check the official prescribing information (US Prescribing Information or EU SmPC) and speak to your doctor or pharmacist before acting on anything here. Drugs in the same class are not automatically interchangeable, and approvals, brand names and indications differ between the US, the EU/Ireland (EMA/HPRA) and other regions. Spotted an error? Tell us — we correct promptly and log it.